Reflection of surface acoustic waves on domain walls in a LiNbO3 crystal

This letter reports on a scanning electron microscopy study of reflection of surface acoustic waves on the domain walls in a LiNbO3 crystal. The regular domain structure with ∼5-mm period was formed in a LiNbO3 crystal by the method of aftergrowth thermoelectrical treatment. It is shown that the regular domain structure reflects surface acoustic waves on the domain walls in a ferroelectric LiNbO3 crystal.